Modulational Instability Of Dust Electron Acoustic Waves In Superthermal Dusty Plasmas

2011 ◽  
Author(s):  
N. S. Saini ◽  
S. Sultana ◽  
I. Kourakis ◽  
Vladimir Yu. Nosenko ◽  
Padma K. Shukla ◽  
...  
Keyword(s):  
Acoustic Waves ◽  
Modulational Instability ◽  
Dusty Plasmas ◽  
Electron Acoustic Waves ◽  
Electron Acoustic

Modulational instability of electron-acoustic waves: an application to auroral zone plasma

2006 ◽  
Vol 41 (1) ◽  
pp. 151-156 ◽  
Author(s):  
T. S. Gill ◽  
H. Kaur ◽  
S. Bansal ◽  
N. S. Saini ◽  
P. Bala
Keyword(s):  
Acoustic Waves ◽  
Modulational Instability ◽  
Auroral Zone ◽  
Electron Acoustic Waves ◽  
Electron Acoustic

Modulational instability of electron-acoustic waves in plasmas with superthermal electrons

2012 ◽  
Vol 90 (7) ◽  
pp. 661-666 ◽  
Author(s):  
Parvin Eslami ◽  
Marzieh Mottaghizadeh ◽  
Hamid Reza Pakzad
Keyword(s):  
Acoustic Waves ◽  
Modulational Instability ◽  
Perturbation Technique ◽  
Density Ratio ◽  
Wave Number ◽  
Superthermal Electrons ◽  
Electron Acoustic Waves ◽  
Instability Growth ◽  
Cold Electrons ◽  
Electron Acoustic

The propagation of electron-acoustic waves (EAWs) in plasmas composed of inertial cold electrons, hot superthermal electrons, and stationary ions is investigated. By means of the reduction perturbation technique, a nonlinear Schrödinger equation is derived and the modulation instability of EAW is analyzed, where the superthermal parameter is found to be of significant importance. It is shown that the presence of superthermal electrons enhances the critical wave number of the modulational instability of EAWs. Besides, due to the presence of the superthermal electrons, EAWs are stable on a vaster region. Moreover, the modulational instability growth rate is lower for a larger population of superthermal electrons. Further, it is shown that increasing values of the relative density ratio α = ne0/nc0 shifts the instability domain to lower values of wave number k.

scholarly journals Excitation of electron acoustic waves near the electron plasma frequency and at twice the plasma frequency

2000 ◽  
Vol 105 (A6) ◽  
pp. 12919-12927 ◽  
Author(s):  
D. Schriver ◽  
M. Ashour-Abdalla ◽  
V. Sotnikov ◽  
P. Hellinger ◽  
V. Fiala ◽  
...  
Keyword(s):  
Acoustic Waves ◽  
Plasma Frequency ◽  
Electron Plasma ◽  
Electron Plasma Frequency ◽  
Electron Acoustic Waves ◽  
Electron Acoustic
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